Modules: Deprecate agenix module (replace with sops-nix)

system/modules/1_deprecated/agenix/default.nix

@@ -0,0 +1,52 @@
+{
+  config,
+  lib,
+  mylib,
+  pkgs,
+  username,
+  publicKeys,
+  ...
+}: let
+  inherit (config.modules) agenix;
+in {
+  options.modules.agenix = import ./options.nix {inherit lib mylib;};
+
+  config = {
+    # NOTE: Add below snippet to home/christoph/default.nix to generate the secrets.nix file
+
+    # The user will be able to decrypt .age files using agenix.
+    # On each user/machine, this should generate a corresponding secrets.nix
+    # "${config.paths.nixflake}/system/modules/agenix/secrets.nix".text = let
+    #   mkSecret = key: name: "\"${name}.age\".publicKeys = [\"${key}\"];";
+    # in ''
+    #   # This file will contain keys depending on the host/by which user it was built on.
+    #   {
+    #     ${lib.optionalString
+    #     # If this user defined any secrets...
+    #     (builtins.hasAttr "${username}" nixosConfig.modules.agenix.secrets)
+    #     # ...we will add them to the current secrets.nix,
+    #     # s.t. agenix can be used to encrypt/access them.
+    #     (builtins.concatStringsSep "\n"
+    #       (builtins.map
+    #         (mkSecret publicKeys.${username}.ssh)
+    #         nixosConfig.modules.agenix.secrets.${username}))}
+    #   }
+    # '';
+
+    # Register generated secrets to the age system module
+    age.secrets = let
+      mkSecretIfExists = name:
+      # If this user has already encrypted the secret...
+        if builtins.pathExists ./${name}.age
+        # ...we will register it with age...
+        then {${name}.file = ./${name}.age;}
+        # ...otherwise we link to a bogus file.
+        else {${name}.file = ./void.age;};
+    in
+      lib.mkIf
+      # If this user defined any secrets...
+      (builtins.hasAttr "${username}" agenix.secrets)
+      # ...we will register all secrets files that have already been generated.
+      (lib.mkMerge (builtins.map mkSecretIfExists agenix.secrets.${username}));
+  };
+}

system/modules/1_deprecated/agenix/options.nix

@@ -0,0 +1,22 @@
+{
+  lib,
+  mylib,
+  ...
+}: {
+  secrets = lib.mkOption {
+    type = lib.types.attrs;
+    description = "The secret files managed by agenix (encrypted by SSH key)";
+    example = ''
+      {
+        christoph = [
+          "heidi-discord-token"
+          "kopia-password"
+          "kopia-server-username"
+          "kopia-server-password"
+        ];
+      }
+    '';
+
+    default = {};
+  };
+}

system/modules/1_deprecated/agenix/void.age

@@ -0,0 +1 @@
+This secret has not been generated.